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    core 2 dual acting as one cpu

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by amansharma81, Oct 23, 2007.

  1. amansharma81

    amansharma81 Newbie

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    Hi all,
    I want to know that under what circumstances a core 2 dual will start showing one cpu inthe task manager but in the system info,it will still show both cpu are there?Wat can be the reasons for this?Is this error (if I can call it so) can come by itself or some other reason is there for it too?What can be the cures for it?
    Thanks and regards
    Aman....
     
    amansharma81, Oct 23, 2007
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  2. Thomas

    Thomas McLovin

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    Actually its 2 cores not 2 CPUs.
    run Wprime & post your scores they should be good because Wprime is multithreaded
     
    Thomas, Oct 23, 2007
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  3. wobble987

    wobble987 Notebook Virtuoso

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    not all app can take advantage of the 2 cores. if you have one or more light program say, a window explorer, an internet explorer and solitare running; one core is more than enough to process that. however; if you have 2 or more processor intensive applications, eg. you are running a game and an antivirus at the same time; the 2 cores would be use to process that app, in general; one for the game and one for the antivirus.
     
    wobble987, Oct 23, 2007
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  4. amansharma81

    amansharma81 Newbie

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    thns alot for the replies guys.I am afraid I stll didnt get my answer.Is there any possibility that system stops showing at all 2 cores and shows only 1?Thats what I asked why and when it will happen?
     
    amansharma81, Oct 23, 2007
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  5. ccbr01

    ccbr01 Matlab powerhouse! NBR Reviewer

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    No, there is no reverse hyper-threading. Because of two physical cores, there will be always two boxes. The thing is, the more boxes=good things in terms of threaded apps.
     
    ccbr01, Oct 23, 2007
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  6. skriefal

    skriefal Notebook Consultant

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    If by "system info" you are referring to the System control panel applet -- it's merely reporting the identification string that it reads from the processor. It should always show your processor as a "Core 2 Duo" or whatever, even if Windows is not recognizing both cores.

    Under Windows 2000 (and XP?) one possibility may be that your Windows install is configured to load the standard "ACPI PC" HAL rather than the "ACPI Multiprocessor" HAL. But if you're running Vista then that's probably not the cause. Another possibility is that the second core might be disabled in the BIOS.
     
    skriefal, Oct 23, 2007
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